KPrGeSe4 — Properties & Data | MatWorld

KPrGeSe4

ceramic

· JVASP-10884· KPrGeSe4

KPrGeSe4 is a quaternary ceramic compound combining potassium, praseodymium, germanium, and selenium—a rare-earth germanium chalcogenide belonging to the family of materials studied for their unique optical and electronic properties. This is an experimental research material rather than an established industrial ceramic; compounds of this type are investigated primarily for infrared photonics, nonlinear optical applications, and solid-state laser systems where their transparency windows and crystal structure offer advantages over conventional oxides. The combination of rare-earth doping with chalcogenide matrices makes KPrGeSe4 of interest in specialized optoelectronic and sensor applications where mid-to-far-infrared performance is critical.

infrared optics and photonicsnonlinear optical crystalssolid-state laser systemsmid-infrared sensingresearch and development materialsoptical fiber alternatives

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	24.07	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2600	-	DFT · OptB88vdW
Shear Modulus(G)	13.90	GPa	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	4.551	kg/m³	DFT · OptB88vdW

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Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.521	eV	DFT · OptB88vdW
↳	2.308	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	13.23	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.110	-	DFT · OptB88vdW
↳	5.822	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.1572	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00150	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00145	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-249.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	265.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	16.45	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.181	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

KPrGeSe4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental